You can find the through community hubs like the Zoom Effect Manager official site or dedicated developer mirrors on GitHub .
For many models, you must hold the Up and Down knobs (or buttons) while plugging in the USB to enter firmware update mode.
Allows effects from models like the MS-60B , G1on , and G5n to be written onto pedals like the MS-70CDR or MS-50G .
G1 Four, G1X Four (later versions like 2.x provide better support for these). How to Download and Install
Connect your pedal to your PC via a high-quality USB cable.